| Name | Affiliated With | No. Specimens[1] | Code[1] | State | City | Website | LSID |
| William and Lynda Steere Herbarium | New York Botanical Garden | 7,300,000 | NY | New York | Bronx, New York City | [21] | [22] |
| Missouri Botanical Garden Herbarium | Missouri Botanical Garden | 6,370,000 | MO | Missouri | St. Louis | [23] | |
| Harvard University Herbaria | Harvard University | 5,005,000 | A, AMES, ECON, FH, GH | Massachusetts | Cambridge | [24] | [25] |
| United States National Herbarium | Smithsonian Institution | 4,340,000 | US | District of Columbia | Washington | [26] | [27] |
| Field Museum Herbarium | Field Museum | 2,650,000 | F | Illinois | Chicago | [28] | [29] |
| University and Jepson Herbaria | University of California, Berkeley | 2,200,000 | UC/JEPS | California | Berkeley | [30] | |
| California Academy of Sciences Herbarium | California Academy of Sciences | 2,300,000 | CAS, DS | California | San Francisco | [31] | [32] |
| University of Michigan Herbarium | University of Michigan | 1,700,000 | MICH | Michigan | Ann Arbor | [33] | [34] |
| Academy of Natural Sciences Herbarium | Academy of Natural Sciences | 1,430,000 | PH | Pennsylvania | Philadelphia | [35] | [36] |
| Wisconsin State Herbarium | University of Wisconsin–Madison | 1,100,000 | WIS | Wisconsin | Madison | [37] | [38] |
| Rancho Santa Ana Botanic Garden Herbarium | Rancho Santa Ana Botanic Garden | 1,230,000 | RSA | California | Claremont | [39] | [40] |
| University of Texas at Austin Herbarium and the Lundell Herbarium | University of Texas at Austin | 1,006,000 | TEX/LL | Texas | Austin | [41] | [42] |
| Botanical Research Institute of Texas Herbarium | Fort Worth Botanic Garden | 1,445,000 | BRIT | Texas | Fort Worth | [43] | [44] |
| L.H. Bailey Hortorium Herbarium | Cornell University | 845,000 | BH | New York | Ithaca | [45] | [46] |
| Rocky Mountain Herbarium | University of Wyoming | 806,800 | RM | Wyoming | Laramie | [47] |
| Duke University Herbarium | Duke University | 800,000 | DUKE | North Carolina | Durham | [48] | [49] |
| United States National Arboretum Herbarium | United States National Arboretum | 800,000 | NA | District of Columbia | Washington | [50] | |
| University of North Carolina Herbarium | University of North Carolina at Chapel Hill North Carolina Botanical Garden | 750,000 | NCU | North Carolina | Chapel Hill | [51] | [52] |
| Oregon State University Herbarium | Oregon State University | 700,000 | OSC | Oregon | Corvallis | [53] | [54] |
| S.L. Welsh Herbarium | Brigham Young University | 661,100 | BRY | Utah | Provo | [55] | [56] |
| University of Washington Herbarium | University of Washington | 650,000 | WTU | Washington | Seattle | [57] | [58] |
| University of Tennessee Herbarium | University of Tennessee, Knoxville | 650,000 | TENN | Tennessee | Knoxville | [59] | |
| University of Illinois Herbarium | University of Illinois, Urbana-Champaign | 640,000 | ILLS | Illinois | Champaign | [60] | |
| Ada Hayden Herbarium | Iowa State University | 640,000 | ISC | Iowa | Ames | [61] | [62] |
| Herbarium Pacificum | Bishop Museum | 600,000 | BISH | Hawaii | Honolulu | [63] | [64] |
| Willard Sherman Turrell Herbarium | Miami University | 570,000 | MU | Ohio | Oxford | | [65] |
| University of Colorado Museum of Natural History Herbarium | University of Colorado | 565,000 | COLO | Colorado | Boulder | [66] |
| Michigan State University Herbarium | Michigan State University | 560,000 | MSC | Michigan | East Lansing | [67] | [68] |
| Carnegie Museum of Natural History Herbarium | Carnegie Museum of Natural History | 525,000 | CM | Pennsylvania | Pittsburgh | [69] | [70] |
| The Ohio State University Herbarium | The Ohio State University | 500,000 | OS | Ohio | Columbus | [71] | [72] |
| University of Florida Herbarium | Florida Museum of Natural History University of Florida | 470,000 | FLAS | Florida | Gainesville | [73] | [74] |
| University of Louisiana at Monroe Herbarium | University of Louisiana at Monroe | 430,000 | NLU | Louisiana | Monroe | [75] | |
| University of Arizona Herbarium | University of Arizona | 400,000 | ARIZ | Arizona | Tucson | [76] | [77] |
| Cornell Plant Pathology Herbarium | Cornell University | 370,000 | CUP | New York | Ithaca | [78] | [79] |
| Yale University Herbarium | Peabody Museum of Natural History Yale University | 365,000 | YU | Connecticut | New Haven | [80] | [81] |
| Arizona State University Herbarium | Arizona State University | 360,000 | ASU | Arizona | Tempe | [82] | [83] |
| Pringle Herbarium | University of Vermont | 350,000 | VT | Vermont | Burlington | [84] | [85] |
| Brooklyn Botanic Garden Herbarium | Brooklyn Botanic Garden | 310,000 | BKL | New York | Brooklyn | [86] | [87] |
| UC Davis Center for Plant Diversity | University of California, Davis | 300,000 | DAV, DAVH, AHUC | California | Davis | [88] | [89] |
| New York State Museum Herbarium | New York State Museum | 278,662 | NYS | New York | Albany | | [90] |
| University of Georgia Herbarium | University of Georgia | 278,000 | GA | Georgia | Athens | [91] | |
| Illinois Natural History Survey Herbarium | Illinois Natural History Survey | 277,000 | ILLS | Illinois | Champaign | [92] | [93] |
| University of Alaska Museum of the North Herbarium | University of Alaska Museum of the North | 270,000 | ALA | Alaska | Fairbanks | [94] | [95] |
| Milwaukee Public Museum Herbarium | Milwaukee Public Museum | 250,000 | MIL | Wisconsin | Milwaukee | | [96] |
| North Dakota State University Herbarium | North Dakota State University | 250,000 | NDA | North Dakota | Fargo | | [97] |
| Southern Illinois University Herbarium | Southern Illinois University | 250,000 | SIU | Illinois | Carbondale | [98] | [99] |
| Intermountain Herbarium | Utah State University | 280,000[2] | UTC | Utah | Logan | [100] | [101] |
| Diatom Herbarium | Academy of Natural Sciences of Philadelphia | 245,000 | ANSP | Pennsylvania | Philadelphia | | [102] |
| University of South Florida Herbarium | University of South Florida | 235,000 | USF | Florida | Tampa | [103] | [104] |
| Robert Bebb Herbarium | University of Oklahoma | 210,000 | OKL | Oklahoma | Norman | [105] | [106] |
| West Virginia University Herbarium | West Virginia University | 210,000 | WVA | West Virginia | Morgantown | [107] Archived 2019-02-01 at the Wayback Machine | |
| R.K. Godfrey Herbarium | Florida State University | 206,000 | FSU | Florida | Tallahassee | [108] | [109] |
| Robert W. Freckmann Herbarium | University of Wisconsin–Stevens Point | 200,000 | UWSP | Wisconsin | Stevens Point | [110] | [111] |
| Stillinger Herbarium | College of Idaho | 200,000 | ID | Idaho | Moscow | [112] | |
| Morton Arboretum Herbarium | Morton Arboretum | 180,000 | MOR | Illinois | Lisle | [113] | [114] |
| Fairchild Tropical Botanic Garden Herbarium | Fairchild Tropical Botanic Garden | 165,000 | FTG | Florida | Coral Gables | [115] | [116] |
| Louisiana State University Herbarium | Louisiana State University | 159,000 | LSU | Louisiana | Baton Rouge | [117] | [118] |
| Chrysler Herbarium | Rutgers University | 151,000 | CHRB | New Jersey | New Brunswick | [119] | |
| San Diego Natural History Museum Herbarium | San Diego Natural History Museum | 150,000 | SD | California | San Diego | [120] | [121] |
| United States National Seed Herbarium | United States National Arboretum | 140,000 | BARC | District of Columbia | Washington | [122] | |
| Indiana University Herbarium | Indiana University | 140,000 | IND | Indiana | Bloomington | [123] | [124] |
| Oklahoma State University Herbarium | Oklahoma State University | 140,000 | OKLA | Oklahoma | Stillwater | | [125] |
| Harry D. Thiers Herbarium | San Francisco State University | 140,000 | SFSU | California | San Francisco | | [126] |
| Robert L. Gilbertson Mycological Herbarium | University of Arizona | 140,000[3] | | Tucson | Arizona | | |
| Austin Peay State University Herbarium | | 138,000[4] | APSC | Tennessee | Clarksville | [127] | [128] |
| Humboldt State University Herbarium | | 132,000 | HSC | California | Arcata | [129] | [130] |
| North Carolina State University Herbarium | | 125,000 | NCSC | North Carolina | Raleigh | | [131] |
| Louisiana Tech University Herbarium | | 122,635 | LTU | Louisiana | Ruston | [132] | [133] |
| Santa Barbara Botanic Garden Herbarium | | 120,000 | SBBG | California | Santa Barbara | [134] | [135] |
| Massey Herbarium | Virginia Tech | 116,000 | VPI | Virginia | Blacksburg | [136] | [137] |
| Clinton Herbarium | Buffalo Museum of Science | 115,000 | BUF | New York | Buffalo | [138] | [139] |
| Carl F. Chuey Herbarium | Youngstown State University | 115,000 | YUO | Ohio | Youngstown | [140] | |
| Illinois State Museum Herbarium | | 114,000 | ISM | Illinois | Springfield | | [141] |
| Claude E. Phillips Herbarium | Delaware State University | 110,000 | DOV | Delaware | Dover | [142] | [143] |
| A.C. Moore Herbarium | University of South Carolina | 110,000 | USCH | South Carolina | Columbia | [144] | [145] |
| Eastern Kentucky University Herbarium | | 103,000[5] | EKY, BEREA | Kentucky | Richmond | [146] | [147] |
| Arthur Herbarium | Purdue University | 101,000 | PUR | Indiana | West Lafayette | [148] | [149] |
| Steven T. Olney Herbarium | Brown University | 100,000 | BRU | Rhode Island | Providence | | [150] |
| Friesner Herbarium | Butler University | 100,000 | BUT | Indiana | Indianapolis | [151] | [152] |
| Pennsylvania State University Herbarium | | 107,000 | PAC | Pennsylvania | University Park | | [153] |
| Sul Ross State University Herbarium | | 100,000 | SRSC | Texas | Alpine | [154] | [155] |
| California State University Herbarium | California State University, Chico | 98,000 | CHSC | California | Chico | [156] | [157] |
| State University of New York Herbarium | SUNY College of Environmental Science and Forestry | 95,500 | SYRF | New York | Syracuse | | [158] |
| American Type Culture Collection Culture Collection | | 92,000 | ATCC | Virginia | Manassas | | [159] |
| Marie Selby Botanical Gardens Herbarium | | 92,000 | SEL | Florida | Sarasota | | [160] |
| Montana State University Herbarium | | 85,000 | MONT | Montana | Bozeman | | [161] |
| Pacific Union College Herbarium | | 85,000 | PUA | California | Angwin | [162] | [163] |
| Colorado State University Herbarium | | 80,000 | CS | Colorado | Fort Collins | [164] | [165] |
| National Center for Agricultural Utilization Research, USDA/ARS ARS Culture Collection | | 80,000 | NRRL | Illinois | Peoria | | [166] |
| Deaver Herbarium | Northern Arizona University | 80,000 | ASC | Arizona | Flagstaff | [167] | [168] |
| Stephen F. Austin State University Herbarium | | 78,000 | ASTC | Texas | Nacogdoches | | [169] |
| Stover-Ebinger Herbarium | Eastern Illinois University | 77,000 | EIU | Illinois | Charleston | [170] | [171] |
| Tom S. and Miwako K. Cooperrider Herbarium | Kent State University | 76,000 | KE | Ohio | Kent | [172] | [173] |
| Longwood University Herbarium | | 75,000 | FARM | Virginia | Farmville | [174] | [175] |
| Kriebel Herbarium | Purdue University | 75,000 | PUL | Indiana | West Lafayette | [176] | [177] |
| Emporia State University Herbarium | | 70,000 | KSTC | Kansas | Emporia | | [178] |
| New Mexico State University Herbarium | | 70,000 | NMC | New Mexico | Las Cruces | [179] | [180] |
| Wesley Niles Herbarium | College of Southern Nevada | 70,000 | UNLV | Nevada | Henderson | [6][181] | |
| Muhlenberg College Herbarium | | 65,000 | MCA | Pennsylvania | Allentown | | [182] |
| John D. Freeman Herbarium | Auburn University | 64,000 | AUA | Alabama | Auburn | [183] | [184] |
| Desert Botanical Garden Herbarium | Desert Botanical Garden | 66,000 | DES | Arizona | Phoenix | [185] | [186] |
| Ozarks Regional Herbarium | Missouri State University | 62,181 | SMS | Missouri | Springfield | [187] | [188] |
| Robert F. Hoover Herbarium | California Polytechnic State University | 62,000 | OBI | California | San Luis Obispo | | [189] |
| Baylor University Herbarium | Baylor University | 61,000 | BAYLU | Texas | Waco | | [190] |
| Chadron State College Herbarium | | 60,789 | CSCN | Nebraska | Chadron | [191] | [192] |
| Clemson University Herbarium | | 60,000 | CLEMS | South Carolina | Clemson | | [193] |
| Cleveland Museum of Natural History Herbarium | | 60,000 | CLM | Ohio | Cleveland | [194] | [195] |
| Ted R. Bradley Herbarium | George Mason University | 60,000 | GMUF | Virginia | Fairfax | [196] | [197] |
| Illinois State University Herbarium | | 60,000 | ISU | Illinois | Normal | | [198] |
| Ramsey-Freer Herbarium | University of Lynchburg | 60,000 | LYN | Virginia | Lynchburg | | [199] |
| Ray J. Davis Herbarium | Idaho State University | 60,000 | IDS | Idaho | Pocatello | [200] | [201] |
| Rochester Academy of Science Herbarium | | 60,000 | ROCH | New York | Rochester | | [202] |
| Smith College Herbarium | | 60,000 | SCHN | Massachusetts | Northampton | | [203] |
| Billington Herbarium | Cranbrook Institute of Science | 57,905 | BLH | Michigan | Bloomfield Hills | | [204] |
| Theodore M. Sperry Herbarium | Pittsburg State University | 65,500 | KSP | Kansas | Pittsburg | | [205] |
| San Juan College Herbarium | | 55,000 | SJNM | New Mexico | Farmington | | [206] |
| University of Kentucky Herbarium | | 50,000 | KY | Kentucky | Lexington | [207] | [208] |
| Desert Botanical Garden Herbarium | | 54,000 | DES | Arizona | Phoenix | [209] | [210] |
| Marshall University Herbarium | | 50,000 | MUHW | West Virginia | Huntington | | [211] |
| National Tropical Botanical Garden Herbarium | | 50,000 | PTBG | Hawaii | Kalaheo, Kauai | [212] | [213] |
| Towson University Herbarium | | 50,000 | BALT | Maryland | Towson | [214] | [215] |
| Clark University Herbarium | | 47,000 | CUW | Massachusetts | Worcester | | [216] |
| Ohio University Herbarium | | 46,000 | BHO | Ohio | Athens | | [217] |
| Angelo State University Herbarium | | 45,000 | SAT | Texas | San Angelo | | [218] |
| Central Wyoming College Herbarium | | 45,000 | CWC | Wyoming | Riverton | | [219] |
| Fay A. MacFadden Herbarium | California State University, Fullerton | 43,310 | MACF | California | Fullerton | [220] | [221] |
| Kathryn Kalmbach Herbarium | Denver Botanic Gardens | 42,000 | KHD | Colorado | Denver | | [222] |
| Mecklenburg County Park and Recreation Herbarium | | 42,000 | UNCC | North Carolina | Charlotte | | [223] |
| Mississippi State University Herbarium | | 40,500 | MISSA | Mississippi | Mississippi State | [224] | [225] |
| Murray State University Herbarium | | 40,500 | MUR | Kentucky | Murray | | [226] |
| Forest Products Laboratory Herbarium | | 40,000 | CFMR | Wisconsin | Madison | | [227] |
| Howard Payne University Herbarium | | 40,000 | HPC | Texas | Brownwood | | [228] |
| Robert A. Vines Environmental Science Center Herbarium | | 40,000 | SBSC | Texas | Houston | | [229] |
| Harold M. Tucker Herbarium | | 39,000 | CIC | Idaho | Caldwell | | |
| California State University Herbarium | California State University, Los Angeles | 37,000 | CSLA | California | Los Angeles | | [230] |
| Fort Hays State University Herbarium | | 36,000 | FHKSC | Kansas | Hays | | [231] |
| California Department of Food and Agriculture Herbarium | | 35,000 | CDA | California | Sacramento | | [232] |
| California State University Herbarium | California State University, Fresno | 35,000 | FSC | California | Fresno | | [233] |
| Walter B. McDougall Herbarium | Museum of Northern Arizona | 35,000 | MNA | Arizona | Flagstaff | [234] | [235] |
| Northern Kentucky University Herbarium | | 35,000 | KNK | Kentucky | Highland Heights | [236] | [237] |
| South Dakota State University Herbarium | | 35,000 | SDC | South Dakota | Brookings | | [238] |
| Jacksonville State University Herbarium | | 31,265 | JSU | Alabama | Jacksonville | | [239] |
| Julian H. Miller Mycological Herbarium | Georgia Museum of Natural History University of Georgia | 30,000 | GAM | Georgia | Athens | [240] | [241] |
| Black Hills State University Herbarium | | 30,000 | BHSC | South Dakota | Spearfish | | [242] |
| Boise State University Herbarium | | 30,000 | SRP | Idaho | Boise | | [243] |
| Chicago Academy of Sciences Herbarium | | 30,000 | CACS | Illinois | Chicago | [244] | [245] |
| Morris Arboretum Herbarium | University of Pennsylvania | 30,000 | MOAR | Pennsylvania | Philadelphia | [246] | [247] |
| Nicholls State University Herbarium | | 30,000 | THIB | Louisiana | Thibodaux | | [248] |
| Southwest Texas State University Herbarium | | 30,000 | SWT | Texas | San Marcos | | [249] |
| University of Tennessee at Chattanooga Herbarium | | 30,000 | UCHT | Tennessee | Chattanooga | [250] | [251] |
| Nevada State Museum Herbarium | | 28,500 | NSMC | Nevada | Carson City | | [252] |
| Old Dominion University Herbarium | | 28,000 | ODU | Virginia | Norfolk | | [253] |
| Smithsonian Institution Herbarium | | 28,000 | USNC | District of Columbia | Washington | | [254] |
| St. Cloud State University Herbarium | | 28,000 | SCL | Minnesota | St. Cloud | [255] | [256] |
| St. John's University/College of Saint Benedict Herbarium | | 28,000 | CSB | Minnesota | Collegeville | [257] | [258] |
| CSU Center for Environmental Management of Military Lands Herbarium | | 35,000 | CMML | Colorado | Fort Collins | | |
| Naples Botanical Garden Herbarium | | 27,000 | SWF | Florida | Naples | | [259] |
| Southern Illinois University Hepatic Herbarium | | 27,000 | ABSH | Illinois | Carbondale | [260] | [261] |
| Central Michigan University Herbarium | | 26,000 | CMC | Michigan | Mount Pleasant | | [262] |
| Denison University Herbarium | | 26,000 | DEN | Ohio | Granville | | [263] |
| Morehead State University Herbarium | | 26,000 | MDKY | Kentucky | Morehead | | [264] |
| Tennessee Technological University Herbarium | | 25,000 | HTTU | Tennessee | Cookeville | [265] | [266] |
| Arkansas State University Herbarium | | 25,000 | STAR | Arkansas | State University | [267] | [268] |
| Central Washington University Herbarium | | 25,000 | ELRG | Washington | Ellensburg | [269] | [270] |
| Charleston Museum Herbarium | | 25,000 | CHARL | South Carolina | Charleston | | [271] |
| Connecticut Agricultural Experiment Station Herbarium | | 25,000 | NHES | Connecticut | New Haven | [272] | [273] |
| Eastern Michigan University Herbarium | | 25,000 | EMC | Michigan | Ypsilanti | | [274] |
| Knox College Herbarium | | 25,000 | KNOX | Illinois | Galesburg | | [275] |
| Bernard Lowy Mycological Herbarium | Louisiana State University | 25,000 | LSUM | Louisiana | Baton Rouge | [276] | [277] |
| Massachusetts College of Liberal Arts Herbarium | | 25,000 | NASC | Massachusetts | North Adams | | [278] |
| Range Science Herbarium | New Mexico State University | 25,000 | NMCR | New Mexico | Las Cruces | [279] | [280] |
| North Coast Herbarium of California | Sonoma State University | 25,000 | NCC | California | Rohnert Park | | [281] |
| Staten Island Institute of Arts and Sciences Herbarium | | 25,000 | SIM | New York | Staten Island | | [282] |
| Grinnell College Herbarium | | 24,000 | GRI | Iowa | Grinnell | | [283] |
| Muskingum University Herbarium | | 23,000 | MUS | Ohio | New Concord | | [284] |
| Pennsylvania Department of Agriculture Herbarium | | 23,000 | PAM | Pennsylvania | Harrisburg | | [285] |
| Middle Tennessee State University Herbarium | | 23,000 | MTSU | Tennessee | Murfreesboro | | [286] |
| Colorado College Herbarium | | 22,500 | COCO | Colorado | Colorado Springs | [287] | [288] |
| North Museum of Natural History and Science Herbarium | | 22,380 | FMC | Pennsylvania | Lancaster | | [289] |
| Northern Illinois University Herbarium | | 22,000 | DEK | Illinois | DeKalb | [290] | [291] |
| Denver Botanic Gardens Mycology Laboratory and Herbarium | | 21,000 | DBG | Colorado | Denver | | [292] |
| Wayne E. Manning Herbarium | Bucknell University | 20,000 | BUPL | Pennsylvania | Lewisburg | [293] | [294] |
| William Darlington Herbarium | West Chester University | 20,000 | DWC | Pennsylvania | West Chester | [610] | [611] |
| California State University Herbarium | California State University, Northridge | 20,000 | SFV | California | Northridge | | [295] |
| Carleton College Herbarium | | 20,000 | CARL | Minnesota | Northfield | | [296] |
| Fairmont State University Herbarium | | 20,000 | FWVA | West Virginia | Fairmont | | [297] |
| Furman University Herbarium | | 20,000 | FUGR | South Carolina | Greenville | | [298] |
| Georgia Southern University Herbarium | | 20,000 | GAS | Georgia | Statesboro | | [299] |
| Hoysradt Herbarium | Hartwick College | 20,000 | HHH | New York | Oneonta | | [300] |
| Lord Fairfax Community College Herbarium | | 20,000 | LFCC | Virginia | Middletown | | [301] |
| D. T. MacRoberts Herbarium | Louisiana State University | 20,000 | LSUS | Louisiana | Shreveport | | [302] |
| Northwestern State University Herbarium | | 20,000 | NATC | Louisiana | Natchitoches | | [303] |
| South Plains College Herbarium | | 20,000 | SPLT | Texas | Levelland | | [304] |
| Luman Andrews Herbarium | Springfield Science Museum | 19,000 | SPR | Massachusetts | Springfield | | [305] |
| University of Memphis Herbarium | University of Memphis | 19,000 | MEM | Tennessee | Memphis | [306] | |
| Emory University Herbarium | | 18,805 | GEO | Georgia | Atlanta | | [307] |
| Arkansas Tech University Herbarium | | 18,000 | APCR | Arkansas | Russellville | | [308] |
| Steven Pearl Lathrop Herbarium | Beloit College | 18,000 | BELC | Wisconsin | Beloit | | [309] |
| Fort Lewis College Herbarium | | 17,200 | FLD | Colorado | Durango | | [310] |
| Ball State University Herbarium | | 17,000 | BSUH | Indiana | Muncie | | [311] |
| East Tennessee State University Herbarium | | 17,000 | ETSU | Tennessee | Johnson City | | [312] |
| Missouri Southern State University Herbarium | | 17,000 | MCJ | Missouri | Joplin | | [313] |
| Newberry College Herbarium | | 16,500 | NBYC | South Carolina | Newberry | | [314] |
| St. Martin's College Herbarium | | 16,500 | OSMC | Washington | Lacey | | [315] |
| Mississippi Museum of Natural Science Herbarium | | 16,480 | MMNS | Mississippi | Jackson | | [316] |
| Idaho Herbarium | Brigham Young University | 16,000 | RICK | Idaho | Rexburg | | [317] |
| Billings Herbarium | Montana State University | 16,000 | MSUB | Montana | Billings | | [318] |
| Northeastern University Herbarium | | 16,000 | HNUB | Massachusetts | Boston | | [319] |
| Jason Swallen Herbarium | Ohio Wesleyan University | 16,000 | OWU | Ohio | Delaware | | [320] |
| S. R. Warner Herbarium | Sam Houston State University | 16,000 | SHST | Texas | Huntsville | [321] | [322] |
| Slippery Rock University Herbarium | | 16,000 | SLRO | Pennsylvania | Slippery Rock | | [323] |
| Monroe County Department of Parks Herbarium | | 15,720 | HPH | New York | Rochester | | [324] |
| Henderson State University Herbarium | | 15,500 | HEND | Arkansas | Arkadelphia | | [325] |
| Alma College Herbarium | | 15,000 | ALMA | Michigan | Alma | | [326] |
| George R. Cooley Herbarium | Colgate University | 15,000 | GRCH | New York | Hamilton | | [327] |
| Delta Institute of Natural History Herbarium | | 15,000 | DINH | Maine | Bowdoin | [328] | [329] |
| Earlham College Herbarium | | 15,000 | EAR | Indiana | Richmond | | [330] |
| Fairbanks Museum and Planetarium Herbarium | | 15,000 | SJFM | Vermont | St. Johnsbury | | [331] |
| Gulf Coast Research Laboratory Herbarium | | 15,000 | HGCRL | Mississippi | Ocean Springs | | [332] |
| James Madison University Herbarium | | 15,000 | JMUH | Virginia | Harrisonburg | | [333] |
| Keene State College Herbarium | | 15,000 | KESC | New Hampshire | Keene | | [334] |
| Occidental College Herbarium | | 15,000 | LOC | California | Los Angeles | | [335] |
| Parasitic Seed Plants Herbarium | | 15,000 | PSP | West Virginia | Burlington | | [336] |
| Potato Introduction Station Herbarium | | 15,000 | PTIS | Wisconsin | Sturgeon Bay | | [337] |
| San Diego State University Herbarium | | 15,000 | SDSU | California | San Diego | [338] | [339] |
| Carl Sharsmith Herbarium | San Jose State University | 15,000 | SJSU | California | San Jose | [340] | [341] |
| Toney Keeney Herbarium | Southwest Texas Junior College | 14,372 | UVST | Texas | Uvalde | | [342] |
| Bowling Green State University Herbarium | | 14,000 | BGSU | Ohio | Bowling Green | | [343] |
| Southeast Missouri State University Herbarium | | 14,000 | SEMO | Missouri | Cape Girardeau | | [344] |
| Southern Oregon University Herbarium | | 14,000 | SOC | Oregon | Ashland | [345] | [346] |
| California State University Herbarium | California State University, Sacramento | 13,000 | SACT | California | Sacramento | | [347] |
| Carthage College Herbarium | | 13,000 | CART | Wisconsin | Kenosha | | [348] |
| Georgia Southwestern State University Herbarium | | 13,000 | GSW | Georgia | Americus | | [349] |
| Randolph College Herbarium | | 13,000 | RMWC | Virginia | Lynchburg | | [350] |
| Rocky Mountain Research Station Herbarium | | 13,000 | MRC | Montana | Missoula | | [351] |
| Charles B. Graves Herbarium | Connecticut College | 12,500 | CCNL | Connecticut | New London | | [352] |
| Andrews University Herbarium | | 12,000 | AUB | Michigan | Berrien Springs | | [353] |
| California State University Herbarium | California State University, Long Beach | 12,000 | LOB | California | Long Beach | | [354] |
| Delta State University Herbarium | | 12,000 | DSC | Mississippi | Cleveland | | [355] |
| Huntington University Herbarium | Huntington University | 12,000 | HUNT | Indiana | Huntington | [356] | |
| Rocky Mountain Research Station Forest Pathology Herbarium | USDA Forest Service | 12,000 | FPF | Colorado | Fort Collins | | [357] |
| Southeastern Louisiana University Herbarium | | 12,000 | SELU | Louisiana | Hammond | | [358] |
| Central Missouri State University Herbarium | | 11,854 | WARM | Missouri | Warrensburg | | [359] |
| Michigan Technological University Herbarium | | 11,710 | MCTC | Michigan | Houghton | | [360] |
| Lyndon State College Herbarium | | 11,500 | LSC | Vermont | Lyndonville | | [361] |
| Planting Fields Arboretum State Historic Park Herbarium | | 11,500 | OBPF | New York | Oyster Bay | | [362] |
| Saint Bonaventure University Herbarium | | 11,083 | SBU | New York | St. Bonaventure | | [363] |
| Forest Service, USDA Herbarium | | 11,000 | FSSR | Georgia | Atlanta | | [364] |
| Nancy Poole Rich Herbarium | Chicago Botanic Garden | 10,500 | CHIC | Illinois | Glencoe | [365] | [366] |
| Western Oklahoma Herbarium | Southwestern Oklahoma State University | 10,500 | WOH | Oklahoma | Weatherford | | [367] |
| Stetson University Herbarium | | 10,500 | DLF | Florida | DeLand | | [368] |
| Adams State College Herbarium | | 10,000 | ALAM | Colorado | Alamosa | | [369] |
| Albion College Herbarium | | 10,000 | ALBC | Michigan | Albion | | [370] |
| Stuart K. Harris Herbarium | Boston University | 10,000 | BSN | Massachusetts | Boston | [371] | [372] |
| Columbus State University Herbarium | | 10,000 | COLG | Georgia | Columbus | | [373] |
| Indiana State University Herbarium | | 10,000 | TER | Indiana | Terre Haute | | [374] |
| Arthur G. Shields Herbarium | Indiana University of Pennsylvania | 10,000 | IUP | Pennsylvania | Indiana | | [375] |
| Hells Canyon Herbarium | Lewis–Clark State College | 10,000 | HCH | Idaho | Lewiston | | [376] |
| Moorhead State University Herbarium | | 10,000 | MRD | Minnesota | Moorhead | | [377] |
| Navajo Nation Herbarium | Navajo Nation/Northern Arizona University | 10,000 | NAVA | Arizona | Window Rock | | [378] |
| North Carolina A & T State University Herbarium | | 10,000 | NCATG | North Carolina | Greensboro | | [379] |
| Northwest Missouri State University Herbarium | Northwest Missouri State University | 10,000 | NMSU | Missouri | Maryville | | [380] |
| Norwich University Herbarium | Norwich University | 10,000 | NUV | Vermont | Northfield | | [381] |
| Our Lady of the Lake University Herbarium | Our Lady of the Lake University | 10,000 | LLC | Texas | San Antonio | | [382] |
| Pacific Southwest Research Station Herbarium | USDA Forest Service | 10,000 | IFGP | California | Placerville | | [383] |
| Putnam Museum of History and Natural Science Herbarium | | 10,000 | BDI | Iowa | Davenport | | [384] |
| Reading Public Museum Herbarium | | 10,000 | RPM | Pennsylvania | Reading | [385] | [386] |
| Roger Williams Park Herbarium | | 10,000 | RWPM | Rhode Island | Providence | | [387] |
| Heraly MacDonald Herbarium | St. Norbert College | 10,000 | SNC | Wisconsin | De Pere | | [388] |
| Shasta College Herbarium | | 10,000 | RESC | California | Redding | | [389] |
| State University of New York Herbarium | Binghamton University | 10,000 | BING | New York | Binghamton | | [390] |
| Rocky Mountain Research Station Herbarium | USDA Forest Service | 9,500 | ASUF | Arizona | Flagstaff | | [391] |
| Botanical Research Center Herbarium | | 9,000 | BRCH | Texas | Bryan | | [392] |
| College of the Ozarks Herbarium | | 9,000 | SOTO | Missouri | Point Lookout | | [393] |
| Gilbert M. Smith Herbarium | Hopkins Marine Station, Stanford University | 9,000 | GMS | California | Pacific Grove | | [394] |
| Huntington Botanical Gardens Herbarium | | 9,000 | HNT | California | San Marino | | [395] |
| Marine Biological Laboratory Herbarium | | 9,000 | SPWH | Massachusetts | Woods Hole | [396] | [397] |
| Rhodes College Herbarium | | 9,000 | SWMT | Tennessee | Memphis | | [398] |
| Sewanee Herbarium | Sewanee: The University of the South | 9,000 | UOS | Tennessee | Sewanee | [399] | [400] |
| St. Andrews University Herbarium | | 9,000 | SAPCL | North Carolina | Laurinburg | | [401] |
| State University of New York College at Cortland Herbarium | | 9,000 | CORT | New York | Cortland | | [402] |
| Rocky Mountain Research Station Herbarium | | 8,807 | BOIS | Idaho | Boise | [403] | [404] |
| South Florida Collections Management Center Herbarium | Everglades National Park | 8,600 | FNPS | Florida | Homestead | [405] | [406] |
| Dayton Museum of Natural History Herbarium | | 8,500 | DMNH | Ohio | Dayton | | [407] |
| Adrian College Herbarium | | 8,150 | ADR | Michigan | Adrian | | [408] |
| Dakota Wesleyan University Herbarium | | 8,000 | DWU | South Dakota | Mitchell | | [409] |
| Division of State Parks Herbarium | | 8,000 | MODNR | Missouri | Jefferson City | | [410] |
| Eastern Oregon University Herbarium | | 8,000 | EOSC | Oregon | La Grande | | [411] |
| Florida Department of Agriculture and Consumer Services Herbarium | | 8,000 | PIHG | Florida | Gainesville | | [412] |
| Grand Canyon National Park Museum Collection Herbarium | | 8,000 | GCNP | Arizona | Grand Canyon | | [413] |
| Longwood Gardens Herbarium | | 8,000 | KEN | Pennsylvania | Kennett Square | | [414] |
| Pacific Grove Museum of Natural History Herbarium | | 8,000 | PGM | California | Pacific Grove | | [415] |
| Peabody Essex Museum Herbarium | | 8,000 | PM | Massachusetts | Salem | | [416] |
| Nevada Operations Office Herbarium | U.S. Department of Energy | 7,787 | NTS | Nevada | Las Vegas | | [417] |
| Great Smoky Mountains National Park Herbarium | | 7,700 | GSMNP | Tennessee | Gatlinburg | | [418] |
| Converse University Herbarium | | 7,500 | CONV | South Carolina | Spartanburg | | [419] |
| Florida Southern College Herbarium | | 7,500 | FSCL | Florida | Lakeland | | [420] |
| Hope College Herbarium | | 7,500 | HCHM | Michigan | Holland | | [421] |
| Howard University Herbarium | | 7,500 | HUDC | District of Columbia | Washington | [422] | [423] |
| Orange County Department of Agriculture Herbarium | | 7,400 | ANA | California | Anaheim | | [424] |
| Orville Bissett Herbarium | Central Connecticut State University | 7,380 | CCSU | Connecticut | New Britain | | [425] |
| National Park Service Herbarium | | 7,200 | YM | California | Yosemite National Park | | [426] |
| Kellogg Biological Station Herbarium | Michigan State University | 7,079 | KBSMS | Michigan | Hickory Corners | [427] | [428] |
| Uinta Herbarium | Bureau of Land Management | 7,000 | UI | Utah | Vernal | | [429] |
| Jesup Herbarium | Dartmouth College | 7,000 | HNH | New Hampshire | Hanover | | [430] |
| Gesneriad Gardens Herbarium | | 7,000 | GGB | Colorado | Longmont | | [431] |
| Nantucket Maria Mitchell Association Herbarium | | 7,000 | NMMA | Massachusetts | Nantucket | | [432] |
| Rocky Mountain Research Station Herbarium | | 7,000 | SSLP | Utah | Provo | [433] | [434] |
| Cameron University Herbarium | | 6,675 | CAMU | Oklahoma | Lawton | | [435] |
| Oscar Scherer State Park Herbarium | | 6,621 | FLSP | Florida | Osprey | | [436] |
| Archbold Biological Station Herbarium | | 6,500 | ARCH | Florida | Lake Placid | | [437] |
| California State University Herbarium | California State University, East Bay | 6,500 | HAY | California | Hayward | | [438] |
| Harbor Branch Oceanographic Institute Herbarium | | 6,500 | HBFH | Florida | Fort Pierce | | [439] |
| Radford University Herbarium | | 6,500 | RUHV | Virginia | Radford | | [440] |
| Francis Marion University Herbarium | | 6,300 | FMUH | South Carolina | Florence | | [441] |
| Michael Wirth Herbarium | New England College | 6,210 | NHNE | New Hampshire | Henniker | | [442] |
| Charles O. Wingo, Jr. Herbarium | Salisbury University | 6,200 | SUHC | Maryland | Salisbury | [443] | [444] |
| Southern Forest Range Program Herbarium | Southern Research Station | 6,200 | SFRP | Louisiana | Pineville | [445] | [446] |
| Baylor University Herbarium | | 6,000 | SRCG | Texas | Gruver | | [447] |
| Bureau of Land Management Herbarium | | 6,000 | BLMLK | Oregon | Lakeview | | [448] |
| Chaffey College Herbarium | | 6,000 | CHAF | California | Alta Loma | | [449] |
| Elmira College Herbarium | | 6,000 | ECH | New York | Elmira | | [450] |
| Iowa Lakeside Laboratory Herbarium | | 6,000 | ILH | Iowa | Milford | | [451] |
| Leo Galloway Herbarium | Missouri Western State University | 6,000 | MWSJ | Missouri | St. Joseph | | [452] |
| Northern Michigan University Herbarium | | 6,000 | NM | Michigan | Marquette | | [453] |
| Northern Prairie Research Center Herbarium | | 6,000 | NPWRC | North Dakota | Jamestown | [454] | [455] |
| State University of New York at Oneonta Herbarium | | 6,000 | SUCO | New York | Oneonta | | [456] |
| Snow College Herbarium | | 5,990 | EPHR | Utah | Ephraim | | [457] |
| Colorado Mesa University Herbarium | | 5,700 | MESA | Colorado | Grand Junction | | [458] |
| James C. Parks Herbarium | Millersville University | 22,877 | MVSC | Pennsylvania | Millersville | [459] | [460] |
| Oral Roberts University Herbarium | | 5,700 | ORU | Oklahoma | Tulsa | | [461] |
| Rob & Bessie Welder Wildlife Foundation Herbarium | | 5,600 | WWF | Texas | Sinton | | [462] |
| Aquinas College Herbarium | | 5,500 | AQC | Michigan | Grand Rapids | | [463] |
| Lincoln Memorial University Herbarium | | 5,500 | LNCN | Tennessee | Harrogate | | [464] |
| Hardin–Simmons University Herbarium | | 5,500 | HSU | Texas | Abilene | | [465] |
| Marvin A. Bichel Herbarium | Nebraska Wesleyan University | 5,500 | HNWU | Nebraska | Lincoln | | [466] |
| Joe M. Anderson Herbarium | Northeastern State University | 5,170 | NOSU | Oklahoma | Tahlequah | | [467] |
| Davis and Elkins College Herbarium | | 5,120 | DEWV | West Virginia | Elkins | | [468] |
| Birmingham Botanical Gardens Herbarium | | 5,100 | BBG | Alabama | Birmingham | | [469] |
| Pacific Southwest Forest and Range Experiment Station Forest Disease Herbarium | | 5,100 | PFRS | California | Berkeley | | [470] |
| Augustana University Herbarium | | 5,000 | AUG | South Dakota | Sioux Falls | | [471] |
| College of the Atlantic Herbarium | College of the Atlantic and Acadia National Park | 13,000 | HCOA | Maine | Bar Harbor | [472] | [473] |
| College of the Redwoods, Mendocino Coast Campus Herbarium | | 5,000 | CRMC | California | Fort Bragg | | [474] |
| Crater Lake National Park Herbarium | | 5,000 | CRLA | Oregon | Crater Lake | | [475] |
| East Central University Herbarium | | 5,000 | ECSC | Oklahoma | Ada | | [476] |
| University of Tennessee at Martin | | 5,000 | UTM | Tennessee | Martin | | |
| Flathead Valley Community College Herbarium | | 5,000 | FVCC | Montana | Kalispell | | [477] |
| Hendrix College Herbarium | | 5,000 | HXC | Arkansas | Conway | | [478] |
| High Point University Herbarium | | 5,000 | HPU | North Carolina | High Point | | [479] |
| Indiana University Southeast Herbarium | | 5,000 | JEF | Indiana | New Albany | [480] | [481] |
| Lamar University Herbarium | | 5,000 | LAMU | Texas | Beaumont | [482] | [483] |
| Los Angeles Valley College Herbarium | | 5,000 | VNC | California | Van Nuys | | [484] |
| McNeese State University Herbarium | | 5,000 | MCN | Louisiana | Lake Charles | | [485] |
| Shorter University Herbarium | | 5,000 | SHOR | Georgia | Rome | | [486] |
| Bridger-Teton National Forest Herbarium | | 4,935 | BTJW | Wyoming | Jackson | | [487] |
| New England Wild Flower Society Herbarium | | 4,500 | BEDF | Massachusetts | Framingham | | [488] |
| Santa Clara University Herbarium | | 4,500 | SACL | California | Santa Clara | | [489] |
| Bridgewater College Herbarium | | 4,293 | BDWR | Virginia | Bridgewater | [490] | [491] |
| California State University Stanislaus Herbarium | | 4,000 | SHTC | California | Turlock | [492] | [493] |
| Clinch Valley College, University of Virginia Herbarium | | 4,000 | CVCW | Virginia | Wise | | [494] |
| College of Eastern Utah Herbarium | | 4,000 | PRI | Utah | Price | | [495] |
| University of Mary Washington Herbarium | | 4,000 | MWCF | Virginia | Fredericksburg | | [496] |
| Darlene and William Radichel Herbarium | Minnesota State University, Mankato | 4,000 | MANK | Minnesota | Mankato | | [497] |
| Swarthmore College Herbarium | | 4,000 | SWC | Pennsylvania | Swarthmore | | [498] |
| Northwestern Oklahoma State University Herbarium | | 3,800 | NWOSU | Oklahoma | Alva | | [499] |
| Salem International University Herbarium | | 3,600 | SAWV | West Virginia | Salem | | [500] |
| Roanoke College Herbarium | | 3,544 | SARC | Virginia | Salem | | [501] |
| Friday Harbor Laboratories Herbarium | University of Washington | 3,500 | FHL | Washington | Friday Harbor | [502] | [503] |
| Grand Valley State University Herbarium | | 3,500 | GVSC | Michigan | Allendale | | [504] |
| Middlebury College Herbarium | Middlebury College | 3,500 | MID | Vermont | Middlebury | [505] | |
| State University of New York Herbarium | SUNY Geneseo | 3,500 | GESU | New York | Geneseo | | [506] |
| Colby College Herbarium | | 3,300 | WAVI | Maine | Waterville | | [507] |
| Manti-La Sal National Forest Herbarium | | 3,200 | MALS | Utah | Price | | [508] |
| Oakland Museum of California Herbarium | | 3,200 | OAKL | California | Oakland | | [509] |
| San Diego Mesa College Herbarium | | 3,200 | SDM | California | San Diego | | [510] |
| Death Valley National Park Herbarium | | 3,148 | DEVA | California | Death Valley | [511] | [512] |
| Rowe-Love Herbarium | Lane Community College | 3,100 | LCEU | Oregon | Eugene | [513] | [514] |
| Agnes Scott College Herbarium | | 3,000 | DECA | Georgia | Decatur | | [515] |
| La Sierra University Herbarium | | 3,000 | LOMA | California | Riverside | | [516] |
| Lassen Volcanic National Park Herbarium | | 3,000 | LVNP | California | Mineral | | [517] |
| Newark Museum Herbarium | | 3,000 | NEMU | New Jersey | Newark | | [518] |
| Seattle Pacific University Herbarium | | 3,000 | SPC | Washington | Seattle | [519] | [520] |
| Ash Mountain Herbarium | Sequoia and Kings Canyon National Parks | 3,000 | THRI | California | Three Rivers | [521] | [522] |
| Santa Barbara City College Herbarium | | 2,900 | SBCC | California | Santa Barbara | | [523] |
| Pasadena City College Herbarium | | 2,700 | PASA | California | Pasadena | | [524] |
| Saint Mary's College Herbarium | | 2,650 | WINO | Minnesota | Winona | | [525] |
| Mississippi University for Women Herbarium | | 2,600 | MSCW | Mississippi | Columbus | | [526] |
| Grand Rapids Junior College Herbarium | | 2,537 | GRJC | Michigan | Grand Rapids | | [527] |
| California State Polytechnic University Herbarium | | 2,500 | CSPU | California | Pomona | [528] | [529] |
| Eastern Mennonite University Herbarium | | 2,500 | HAVI | Virginia | Harrisonburg | | [530] |
| Emory and Henry University Herbarium | | 2,500 | EHCV | Virginia | Emory | | [531] |
| Florida Atlantic University Herbarium | | 2,500 | FAU | Florida | Davie | | [532] |
| Fox Research Forest Herbarium | | 2,500 | SPH | New Hampshire | Hillsborough | | [533] |
| Mills College Herbarium | | 2,500 | OMC | California | Oakland | | [534] |
| Oregon State University Herbarium | | 2,500 | OSUF | Oregon | Corvallis | | [535] |
| Palomar College Herbarium | | 2,500 | PASM | California | San Marcos | [536] | [537] |
| Isle Royale National Park Herbarium | | 2,200 | IRP | Michigan | Houghton | | [538] |
| Anza-Borrego Desert State Park Herbarium | | 2,000 | BSCA | California | Borrego Springs | | [539] |
| Pierce College Herbarium | | 2,000 | LAPC | California | Woodland Hills | | [540] |
| Rutgers University Herbarium | | 2,000 | NCAS | New Jersey | Newark | | [541] |
| Saint Meinrad College of Liberal Arts Herbarium | | 2,000 | SMH | Indiana | Saint Meinrad | | [542] |
| Diablo Valley College Herbarium | | 1,908 | DVM | California | Pleasant Hill | | [543] |
| State University of New York Herbarium | SUNY Brockport | 1,670 | BROC | New York | Brockport | | [544] |
| San Joaquin County Herbarium | | 1,650 | SSJC | California | Stockton | | [545] |
| Everhart Museum Herbarium | | 1,534 | EVMU | Pennsylvania | Scranton | [546] | [547] |
| Gordon College Herbarium | | 1,502 | WMGC | Massachusetts | Wenham | | [548] |
| Winnemucca District Herbarium | Bureau of Land Management | 1,500 | WDNE | Nevada | Winnemucca | | [549] |
| Cornell College Herbarium | | 1,500 | MOVC | Iowa | Mount Vernon | | [550] |
| Hobart and William Smith Colleges Herbarium | | 1,500 | DH | New York | Geneva | | [551] |
| Klamath National Forest Herbarium | | 1,500 | KNFY | California | Yreka | | [552] |
| University of Olivet Herbarium | | 1,500 | OLV | Michigan | Olivet | | [553] |
| Salem College Herbarium | | 1,500 | SC | North Carolina | Winston-Salem | | [554] |
| Point Reyes National Seashore Herbarium | | 1,405 | PORE | California | Point Reyes Station | [555] | [556] |
| Mote Marine Laboratory Herbarium | | 1,369 | MOT | Florida | Sarasota | | [557] |
| Benedictine College Herbarium | | 1,350 | HWBA | Kansas | Atchison | | [558] |
| Nevada Division of Agriculture Herbarium | | 1,327 | NSDA | Nevada | Reno | | [559] |
| Rocky Mountain Forest and Range Experiment Station Herbarium | | 1,222 | ALBU | New Mexico | Albuquerque | | [560] |
| Kansas Wesleyan University Herbarium | | 1,100 | SAL | Kansas | Salina | | [561] |
| Florida Marine Research Institute Herbarium | | 1,000 | STPE | Florida | St. Petersburg | | [562] |
| Luther College Herbarium | | 1,000 | LCDI | Iowa | Decorah | | [563] |
| Saint Michael's College Herbarium | | 1,000 | SMCW | Vermont | Winooski | | [564] |
| Southern Research Station Herbarium | | 1,000 | CHAS | South Carolina | Charleston | [565] | [566] |
| Fishlake National Forest Herbarium | | 850 | FNFR | Utah | Richfield | | [567] |
| Golden West College Herbarium | | 600 | HUBE | California | Huntington Beach | [568] | [569] |
| Muskegon Community College Herbarium | | 600 | MUSK | Michigan | Muskegon | | [570] |
| Houghton Lake Wildlife Research Station Herbarium | | 500 | HL | Michigan | Houghton Lake Heights | | [571] |
| Long Island University Herbarium | | 500 | SOUT | New York | Southampton | | [572] |
| Simpson College Herbarium | | 500 | SICH | Iowa | Indianola | | [573] |
| Mohr Herbarium | Alabama Museum of Natural History | 0 | ALU | Alabama | Tuscaloosa | | [574] |
| Amherst College Herbarium | | 0 | AC | Massachusetts | Amherst | | [575] |
| Arnold Arboretum Herbarium | Harvard University | 0 | AAH | Massachusetts | Jamaica Plain | | [576] |
| Arnold Arboretum Herbarium | Harvard University | 0 | A | Massachusetts | Cambridge | [577] | [578] |
| Austin High School Herbarium | | 0 | AHS | Texas | Austin | | [579] |
| Biology Department Herbarium | Texas A&M University | 0 | TAMU | Texas | College Station | [580] | [581] |
| Dudley Herbarium | California Academy of Sciences | 0 | DS | California | San Francisco | | [582] |
| California Department of Fish and Wildlife Herbarium | | 0 | TIC | California | Terminal Island | | [583] |
| Gilbert L. Stout Plant Disease Herbarium | California Department of Food and Agriculture | 0 | BPS | California | Sacramento | | [584] |
| Carnegie Institution of Washington Herbarium | | 0 | CI | California | Stanford | | [585] |
| Catholic University of America Herbarium | | 0 | LCU | District of Columbia | Washington | | [586] |
| Charterhouse School Museum Herbarium | | 0 | GOD | California | Berkeley | | [587] |
| Citrus College Herbarium | | 0 | AZUS | California | Glendora | | [588] |
| Colorado State Museum Herbarium | | 0 | COLOM | Colorado | Denver | | [589] |
| Crispus Attucks High School Herbarium | | 0 | CAHS | Indiana | Indianapolis | | [590] |
| Cusino Wildlife Research Station Herbarium | | 0 | CUS | Michigan | Shingleton | | [591] |
| Douglass College Herbarium | Rutgers University | 0 | RUT | New Jersey | New Brunswick | | [592] |
| Duke University Moss Herbarium | | 0 | ABSM | North Carolina | Durham | | [593] |
| East High School Herbarium | | 0 | SLC | Utah | Salt Lake City | | [594] |
| Eastern Nevada Landscape Coalition | | 2,150 | ENLC | Nevada | Ely | | [595] |
| Field Museum of Natural History | | 0 | FMNH | Illinois | Chicago | [596] | [597] |
| Forest Products Laboratory Herbarium | | 0 | BFDL | Wisconsin | Madison | | [598] |
| Forest Service Herbarium | US Department of Agriculture | 0 | POFS | Oregon | Portland | | [599] |
| Economic Herbarium of Oakes Ames | Harvard University | 0 | ECON | Massachusetts | Cambridge | [600] | [601] |
| Farlow Reference Library and Herbarium of Cryptogamic Botany | Harvard University | 0 | FH | Massachusetts | Cambridge | [602] | [603] |
| Orchid Herbarium of Oakes Ames | Harvard University | 0 | AMES | Massachusetts | Cambridge | [604] | [605] |
| Houston Museum of Natural Science Herbarium | | 0 | HPM | Texas | Houston | | [606] |
| I.W. Carpenter Jr. Herbarium | Appalachian State University | 0 | BOON | North Carolina | Boone | [607] | [608] |
| Kansas State University Herbarium | | 0 | KSC | Kansas | Manhattan | [609] | [610] |
| Lloyd Library and Museum Herbarium | | 0 | LLO | Ohio | Cincinnati | [611] | [612] |
| Marylhurst College Herbarium | | 0 | MARO | Oregon | Marylhurst | | [613] |
| Michigan Technological University Herbarium | | 0 | MCT | Michigan | Houghton | | [614] |
| Michigan Technological University Herbarium | | 0 | MCTF | Michigan | L'Anse | | [615] |
| Natural History Museum of Los Angeles County Herbarium | | 0 | LAM | California | Los Angeles | | [616] |
| New England Botanical Club Herbarium | | 0 | NEBC | Massachusetts | Cambridge | [617] | [618] |
| Oberlin College Herbarium | | 0 | OC | Ohio | Oberlin | | [619] |
| Ochoco National Forest Herbarium | | 0 | OCNF | Oregon | Prineville | | [620] |
| Otero Junior College Herbarium | | 0 | LAJC | Colorado | La Junta | | [621] |
| Pacific Marine Station Herbarium | | 0 | PMS | California | Dillon Beach | | [622] |
| Pacific Northwest Forest and Range Experiment Station Herbarium | | 0 | LAGO | Oregon | La Grande | | [623] |
| Pfeiffer University Herbarium | | 0 | PFC | North Carolina | Misenheimer | | [624] |
| Pomona College Herbarium | | 0 | POM | California | Claremont | | [625] |
| Portland State University Herbarium | | 29,000 | HPSU | Oregon | Portland | [626] | [627] |
| Prairie View A&M University Herbarium | | 0 | TPV | Texas | Prairie View | | [628] |
| Rappahannock Community College Herbarium | | 0 | GLEN | Virginia | Glenns | | [629] |
| Rocky Mountain Forest and Range Experiment Station Forest Service Herbarium | | 0 | USFS | Colorado | Fort Collins | | [630] |
| Rutgers Mycological Collection | | 40000 | RUTPP | New Jersey | New Brunswick | [631] | [632] |
| Saint Vincent College Herbarium | | 0 | LAT | Pennsylvania | Latrobe | | [633] |
| Santa Barbara Museum of Natural History Herbarium | | 0 | SBM | California | Santa Barbara | | [634] |
| Sonoma State University Herbarium | | 0 | ROPA | California | Rohnert Park | | [635] |
| Southern Utah University | | 0 | SUU | Utah | Cedar City | | [636] |